Pump for liquid beverage preparation devices

Active Publication Date: 2011-05-12
SOC DES PROD NESTLE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0051]Hence, as the pump is resiliently mounted within the housing of the device, for example by means of the elastic support member at its liquid inlet and by means of the elastic sealing member at its liquid o

Problems solved by technology

In general, during operation of the pump of such a device, vibrations occur due to an oscillating or rotational movement of a driven part, e.g. a piston or a number of blades, housed within a pump chamber of the pump.
These vibrations may then

Method used

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  • Pump for liquid beverage preparation devices
  • Pump for liquid beverage preparation devices
  • Pump for liquid beverage preparation devices

Examples

Experimental program
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Embodiment Construction

[0058]FIG. 1 shows a sectional side view of a preferred embodiment of a pump 1 according to the present invention. The pump 1 is preferably a vibrating pump known in the field of beverage preparation machines. Thereby, a piston 3 is movably mounted within a pump chamber 2. Preferably, at least one spring (not shown) is provided within the pump chamber 2 in order to exert a force on the piston 3. Moreover, electromagnetic solenoid 15 is provided in the periphery of the pump chamber 2 in order to interact with the piston 3. Hence, an axial reciprocating movement of the piston 3 within the pump chamber 2 is enabled due to activation by means of the solenoid 15. The pump chamber 2 is connected to a liquid inlet 4a and a liquid outlet 4b of the pump 1. The piston 3 comprises at least one bore 3a which can be selectively closed by at least one valve 3b in order to pump liquid from the liquid inlet 4a to the liquid outlet 4b of the pump 1 during the reciprocating movement of the piston 3.

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PUM

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Abstract

Devices for the preparation of a liquid food or beverage. One device includes a housing, pump, pump support for securing the pump to the housing, a rigid duct that is connected by an elastic sealing member to the housing and to an inlet or outlet of the pump. The pump support includes an elastic support member for resiliently supporting the pump chamber in the housing. Another device includes a pre-suction chamber connected to a liquid inlet of a pump and being designed to intermittently provide liquid to said liquid inlet. A further device includes a connector of at least one elastic sealing member designed to absorb vibrations from a pump of the device and to enable a relative movement of a duct and a liquid inlet or outlet of the pump.

Description

FIELD OF THE INVENTION [0001]The present invention relates to a pump for a device for the preparation of liquid food or a beverage. More particularly, the present invention relates to an elastic support member for resiliently supporting the pump within the housing of the device.BACKGROUND OF THE INVENTION[0002]Beverage preparation machines have been known for a number of years. For example, U.S. Pat. No. 5,943,472 discloses a water circulation system between a water reservoir and a hot water or vapour distribution chamber of an espresso machine. The circulation system includes a valve, a metallic heating tube and a pump that are connected to the reservoir via different silicone hoses, which are joined using clamping collars.[0003]The known beverage preparation devices are equipped with various types of pumps for promoting liquid within the device.[0004]For instance, U.S. Pat. No. 2,715,868 discloses a beverage preparation machine for extracting a beverage ingredient within an extrac...

Claims

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Application Information

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IPC IPC(8): A47J31/043
CPCA47J31/46F04B17/046A47J31/407F16L27/1021F16L37/144F04B53/003
Inventor BUHLER, LEOETTER, STEFANHODEL, THOMASMOSER, RENZOMEIER, MICHAEL
Owner SOC DES PROD NESTLE SA
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